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BEGIN:VEVENT
DTSTAMP:20260521T091353
DTSTART;TZID=America/Detroit:20260603T100000
DTEND;TZID=America/Detroit:20260603T120000
SUMMARY:Presentation:Privacy for Structured Data Release: Time-Discounted Continual Release and Randomized Quantization
DESCRIPTION:Abstract:\n\nDifferential privacy provides a formal framework for limiting disclosure risk in computations on sensitive data. This dissertation studies differential privacy in structured data-release settings\, focusing on two forms of structure: temporal structure in continual release and quantization structure in finite-level release.\n\nFirst\, we propose time-discounted differential privacy (TDDP) for continual release. Standard continual-release privacy definitions do not distinguish events by temporal distance\, whereas the time-discounted formulation allows privacy requirements to decay as events become older. We develop mechanisms for this setting and analyze their privacy and utility guarantees.\n\nSecond\, we analyze the Random Quantization Mechanism (RQM) of Youn et al.\, a mechanism that provides privacy-preserving randomized quantization through subsampling. The mechanism itself is not a contribution of this thesis\; rather\, we derive\, under specified hyperparameter calibration requirements\, a formal privacy characterization of RQM\, including Rényi DP guarantees\, a max-divergence/pure-DP refinement\, and reconstruction-error bounds. These results make precise privacy claims that were not explicitly established in the original presentation of the mechanism. We then study RQM as a randomized quantization procedure\, focusing on how preprocessing choices affect its behavior on unbounded and heavy-tailed data.\n\nFinally\, we complement the theoretical analysis with an empirical study of RQM in several new settings\, beginning with private mean estimation and then considering distributional approximation\, clustering\, and image obfuscation. The results show that RQM is most natural when quantization is already compatible with the intended data representation\, while also highlighting its sensitivity to parameter choices and application context.
UID:148370-21904025@events.umich.edu
URL:https://events.umich.edu/event/148370
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Dissertation,Graduate,Graduate Students,Mathematics
LOCATION:East Hall - 4088
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260601T170313
DTSTART;TZID=America/Detroit:20260603T100000
DTEND;TZID=America/Detroit:20260603T120000
SUMMARY:Lecture / Discussion:Topics in Modern Machine Learning: Sequential Decision Making\, High-Dimensional Statistics and Differential Privacy
DESCRIPTION:Modern machine learning is increasingly applied to make reliable decisions from limited\, noisy\, high-dimensional\, or privacy-constrained data. This dissertation studies several mathematical problems that arise from this demand\, with an emphasis on sequential decision making\, sparse high-dimensional inference\, differential privacy\, and global testing. \n\nThe first part of the dissertation concerns stochastic convex hull membership\, a pure-exploration problem in which one sequentially samples from a finite collection of distributions in order to decide whether a target point belongs to the convex hull of their unknown means. We first give a complete solution in one dimension\, deriving the information-theoretic characteristic time and developing Thompson-CHM\, an asymptotically optimal sampling algorithm whose allocation matches the lower bound. We then further extend the whole theory to the higher-dimensional Gaussian setting\, where Euclidean geometry makes the least favorable alternatives explicit. \n\nThe second part develops differentially private procedures for the Dantzig selector in high-dimensional linear regression. We start by proposing a private sparse-regression method based on a noisy iterative hard-thresholding oracle tailored to the Dantzig selector's score geometry. The algorithm preserves sparsity by construction and satisfies privacy\, parameter-error\, and population excess-risk guarantees\, with the main error rate matching the known differentially private minimax benchmark up to logarithmic factors.  We then introduce a complementary active-set method that privatizes the Dantzig score more directly: it privately identifies violated score coordinates\, refits on a restricted support\, and prunes to exact sparsity.  This second approach is closer to the defining feasibility constraint of the Dantzig selector and provides an alternative route to private sparse estimation under stronger sparse-design conditions.\n\nThe final part studies sparse-signal detection in high-dimensional regression by combining two classical ideas: knockoffs and higher criticism. Knockoffs provide dependence-adaptive negative controls\, while higher criticism is designed to detect rare and weak alternatives near the sharp sparse-mixture boundary. We introduce a multi-knockoff higher-criticism statistic based on Lasso entry times in an augmented design containing multiple knockoff copies per feature. In the orthogonal-design regime\, the proposed statistic attains the classical higher-criticism detection boundary for sparse alternatives against the global null. This result suggests a new way to use knockoff constructions beyond false discovery rate control: as a mechanism for calibrating global tests in high-dimensional models with structured dependence.
UID:148514-21904393@events.umich.edu
URL:https://events.umich.edu/event/148514
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Dissertation
LOCATION:Off Campus Location
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260511T181505
DTSTART;TZID=America/Detroit:20260603T110000
DTEND;TZID=America/Detroit:20260603T190000
SUMMARY:Exhibition:Fore-Site (Phase 2): The Stamps Gallery Pillar Project
DESCRIPTION:\n\nFrom September 2025 through November 2026\, Stamps Gallery is partnering in a curatorial collaboration with two Ypsilanti-based\, artist-run project spaces led by Stamps alumni: C.Y.N.K. Studios\, directed by Sally Clegg (Lecturer III and Student Exhibition Coordinator\, MFA ’20) and Abhishek Narula (MFA ’20)\; and Sometimes Space\, directed by Nathan Byrne (Lecturer I\, MFA ’21). Each space hosts dozens of artists annually for exhibitions\, performances\, and events\, fostering experimental work and building community. For this project\, Byrne\, Clegg\, and Narula have been commissioned to reimagine the pillars on Division Street that flank the gallery. In response\, they’ve curated six artists to create new work for the pillars over three cycles:\n\nPhase 1 (September 12 - December 12) artists: Amelia Burns (Cranbrook MFA ’23) and Erin McKenna (MFA ’20)\nPhase 2 (January 12 - August 12) artists: Sally Clegg (MFA ’20) and Kim Karlsrud (MFA ’20)\nPhase 3 (September 12 - November 12) artists: Abhishek Narula (MFA ’20) and Nathan Byrne (MFA ’21)\nPhase 2 Curatorial Statement\n\nCurated by Sometimes Space: Sally Clegg (entry pillar)\nCurated by CYNK Studios: Kim Karlsrud (courtyard pillar)\n\nArtists Sally Clegg and Kim Karlsrud wrap the Division Street pillars in highly site-specific ornament unearthed from the overlooked margins of Ann Arbor. On the Courtyard pillar\, Karlsrud scales up photographs of objects found in liminal spaces surrounding campus buildings on Green Road\, which the artist has encrusted in road salt. On the entryway pillar\, Clegg zooms in on tiny fragments of found material from UMich’s famous “rock” to celebrate nearly seven decades of student art and activism. Both artists uplift aggregate of local human activity to reveal tiny worlds of found form. \n\nSally Clegg: Sentimentary Rock\nSentimentary Rock is a composition of paint slag collected from the UMich rock monument at the corner of Washtenaw Avenue and Hill Street. This colorful composite material has been accumulating at the base of the iconic limestone boulder since the mid 1950’s\, when students began a tradition of painting it in acts of protest\, creativity\, and ritual\, sometimes multiple times per week. Akin to byproducts of industry such as “Fordite” (collectable chunks of automotive overspray sometimes called ‘Detroit agate’)\, Sentimentary Rock includes thousands of layers\, each dripped from a palimpsestic public proclamation. When processed\, sculpted\, sealed\, assembled\, and macro-photographed\, the result is this enlarged array of tiny gems\, intended to celebrate the indissoluble student voice. \n\nKim Karlsrud: What Amasses\nWhat Amasses is an assemblage of everyday found objects collected within the Miller Creek watershed\, an urbanized drainage system that encompasses much of the city of Ann Arbor and the University of Michigan campus. Selected objects were immersed in a road salt solution\, allowing delicate crystalline formations to emerge. Road salt is a common material input into these hydrological networks during the winter months and exists in multiple states of refinement\, expression\, coherence\, and fragmentation. Each object was then arranged\, photographed\, and enlarged to recontextualize these materials in ways that invite deeper reflections on how infrastructure and human agency blur notions of the natural and the artificial. \nArtist Statements/Bios\n\nSally Clegg \nSally Clegg is an artist and educator from Pelham\, Massachusetts. Her studio practice is rooted in sculpture and expanded printmaking\, stemming from a fascination with human efforts to make meaning from our relationships to objects. Clegg integrates history\, popular culture\, literature and philosophy as material for artmaking\, leveraging personal anecdote and humor to reveal the complexity\, absurdity\, and theoretical richness at play in our connections to things and to ourselves. \n\nClegg holds an MFA in Art from The University of Michigan Stamps School of Art & Design\, and a BA in Art & English from Goucher College. She has exhibited nationally and internationally\, and her work can be found in permanent collections at Yale University\, The New York Public Library\, and elsewhere. Her artwork and writing has appeared in ASAP/Journal\, BOMB Magazine\, Sculpture Magazine\, and Hyperallergic. She is a lecturer in Art & Design at the University of Michigan. Website / Instagram\n\n\nKim Karlsrud \nKim Karlsrud is the co-founder of Commonstudio\, a collaborative creative practice that develops socio-ecological and spatial interventions\, installations\, and initiatives working with and within urban landscapes. Her work explores the space between art and design\, and is grounded in the concept of the “commons\,” that which is shared\, as well as that which is ordinary\, banal\, and commonplace.\n\nKarlsrud completed her undergraduate degree in Product Design from Otis College of Art and Design and an MFA in Art from the University of Michigan. She is currently an Assistant Visiting Professor in the College of Design at the University of Oregon\, teaching across Art and Landscape Architecture departments. She jointly received the 2014-15 Prince Charitable Trust Rome Prize in Landscape Architecture\, was a 2017 resident at the Headlands Center for the Arts\, and is the 2025-26 Fuller Fieldscape Fellow. Website / Instagram
UID:138032-21903383@events.umich.edu
URL:https://events.umich.edu/event/138032
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Art
LOCATION:Off Campus Location
CONTACT:
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BEGIN:VEVENT
DTSTAMP:20250828T001529
DTSTART;TZID=America/Detroit:20260603T110000
DTEND;TZID=America/Detroit:20260603T190000
SUMMARY:Exhibition:Fore-Site (Phase 3): The Stamps Gallery Pillar Project
DESCRIPTION:From September 2025 through August 2026\, Stamps Gallery is partnering in a curatorial collaboration with two Ypsilanti-based\, artist-run project spaces led by Stamps alumni: C.Y.N.K. Studios\, directed by Sally Clegg (Lecturer III and Student Exhibition Coordinator\, MFA ’20) and Abhishek Narula (MFA ’20)\; and Sometimes Space\, directed by Nathan Byrne (Lecturer I\, MFA ’21). Each space hosts dozens of artists annually for exhibitions\, performances\, and events\, fostering experimental work and building community. For this project\, Byrne\, Clegg\, and Narula have been commissioned to reimagine the pillars on Division Street that flank the gallery. In response\, they've curated six artists to create new work for the pillars over three cycles:\nPhase 1 (September 12 - December 12) artists: Amelia Burns (Cranbrook MFA '23) and Erin McKenna (MFA '20)Phase 2 (January 12 - April 12) artists: Sally Clegg (MFA '20) and Kim Karlsrud (MFA '20)Phase 3 (May 12 - August 12) artists: Abhishek Narula (MFA '20) and Nathan Byrne (MFA '21)\nPhase 3 \nCurated by Sometimes Space: Abhishek Narula (entry pillar)Curated by CYNK Studios: Nathan Byrne (courtyard pillar)
UID:138033-21881339@events.umich.edu
URL:https://events.umich.edu/event/138033
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Art
LOCATION:Off Campus Location
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260522T092540
DTSTART;TZID=America/Detroit:20260603T110000
DTEND;TZID=America/Detroit:20260603T130000
SUMMARY:Presentation:Jarrod Stanley - Dissertation Defense
DESCRIPTION:Please join Jarrod Stanley for their dissertation defense titled \"Nickel-Catalyzed Alkoxycarbene Transfer from Simple Carboxylic Acids: Discovery\, Design\, and Optimization\".\n\n*Date:* Wednesday\, June 3rd\n*Time:* 11:00 AM\n*Where:* CHEM 1706\n\nZoom Meeting ID: 950 4670 4458 \nPassword: JChem
UID:148393-21904180@events.umich.edu
URL:https://events.umich.edu/event/148393
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Chemistry
LOCATION:Chemistry Dow Lab - 1706
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260515T084125
DTSTART;TZID=America/Detroit:20260603T110000
DTEND;TZID=America/Detroit:20260603T130000
SUMMARY:Presentation:Structural Effects in Network Dynamical Systems: From Reconstruction to Pattern Formation in Hypergraphs
DESCRIPTION:Abstract:\n\nThis dissertation studies how interaction structure influences the behavior of network dynamical systems and\, more fundamentally\, which aspects of that structure are dynamically observable. While complex systems are often modeled through underlying interaction networks or hypergraphs\, the relationship between structure and dynamics is not direct: different analytical frameworks reveal different structural projections.\n\nFirst\, we study the inverse problem of reconstructing higher-order interaction structure from pairwise observations. We show that such reconstruction is fundamentally non-unique\, establishing intrinsic limitations on structural inference from graph data.\n\nNext\, we analyze network dynamical systems on graphs and show that\, in the linear regime\, structural effects are mediated through coupling operators and their associated spectral and degree-based representations. We further identify intrinsic obstructions to coupling-induced stabilization.\n\nFinally\, extending these ideas to reaction–diffusion systems on directed hypergraphs\, we develop a weakly nonlinear reduction framework for pattern formation near bifurcation. We show that the resulting nonlinear dynamics depend not on the full higher-order interaction structure\, but on specific projected quantities\, termed packing contributions\, which govern pattern selection and saturation. This leads to a characterization of the notion of dynamical graph surrogacy\, under which higher-order interactions become dynamically indistinguishable from pairwise ones.\n\nTaken together\, these results show that structural effects are fundamentally analysis-dependent and provide a unified perspective on the limits of structural inference and the role of higher-order interactions in complex dynamical systems.
UID:148299-21903824@events.umich.edu
URL:https://events.umich.edu/event/148299
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics,Graduate Students,Graduate,Dissertation
LOCATION:East Hall - 3088
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20251218T140448
DTSTART;TZID=America/Detroit:20260603T120000
DTEND;TZID=America/Detroit:20260603T124500
SUMMARY:Well-being:\"A Breath of Fresh Air\" Guided Nature Experience--June
DESCRIPTION:Join fellow staff\, students\, and faculty for an energizing break which will introduce the positive effects of being in nature on our social and emotional well-being. With facilitator guidance\, participants will:\n\n-Practice mindful attention and appreciation for the natural environment.\n-Learn how to refresh your energy and reduce stress by being outside.\n-Cultivate a sense of awe\, curiosity\, connection\, and wonder.\n-Learn how to use the Nature Rx resources in the Michigan App.\n\nWednesday\, June 3\, 2026\n12-12:45 p.m. \nMeeting location: Nichols Arboretum Reader Center\, 1610 Washington Heights\, Ann Arbor\, 48104 for a guided nature experience in the W.E. Upjohn Peony Garden.\n\nWe will learn how to appreciate nature in all its forms\, and this session will be held rain or shine. Please note that this session requires moving or walking outdoors over a distance of approximately a quarter-mile. Options will be provided for those who wish to sit or explore at their own pace and ability. Please wear comfortable attire and dress for the weather. This event may be cancelled in the case of hazardous weather conditions--we will contact you if this is the case.\n\nSponsored by: MHealthy\, Mental Health Counseling & Consultation Services\, Matthaei Botanical Gardens and Nichols Arboretum\, and the Nature Rx Project Team
UID:142913-21891804@events.umich.edu
URL:https://events.umich.edu/event/142913
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mental Health,Health & Wellness,Graduate Students,faculty and staff,arboretum,Well-being,Undergraduate Students,mhealthy,Nature,planet blue,Sustainability
LOCATION:Burnham House
CONTACT:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260605T103907
DTSTART;TZID=America/Detroit:20260603T120000
DTEND;TZID=America/Detroit:20260603T130000
SUMMARY:Well-being:Learn to Meditate in 3 days
DESCRIPTION:Make meditation part of your goal to strengthen your mental well-being. Discover three core practices—meditation\, rejuvenation\, and inner connect in just three session.\n\nMeditation is a mindful journey for regulating your mind. It’s like a mental workout\, training the mind to focus on a single thought amid the 60\,000 that pass through daily. With 3 core practices it cultivates effortless concentration\, heightened awareness\, and presence in the moment\, allowing a shift from thinking to feeling. Meditation also leads to a deeper state of relaxation\, regulating the stress response and promoting numerous health benefits.\n\nThe session will be guided by a trainer via Zoom meeting for all 3 days from noon to 1 p.m. All U-M students\, faculty\, and staff are welcome to join at no cost. No prior experience with meditation is required.\n\nEvent Details\n*When: Every month for 3 days (attending all 3 sessions is recommended)*\n\nThe session is Remote over Zoom and upon registration you will have the Zoom MeetingId and Passcode\nSee Related Links for registration\n\nThis wellness program is coordinated by Information Technology and Services (ITS) Teaching & Learning\, and is provided at no cost by heartfulness.org.\n\nJoin the MCommunity group for email updates – Meditation for wellness
UID:128708-21900748@events.umich.edu
URL:https://events.umich.edu/event/128708
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Well-being,Virtual,Free
LOCATION:Off Campus Location
CONTACT:
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